package socket;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.ServerSocket;
import java.net.Socket;
import java.nio.charset.StandardCharsets;

public class Server {
    private ServerSocket serverSocket;
    public Server(){
        try{
            System.out.println("正在启动服务器");
            serverSocket = new ServerSocket(8088);
            System.out.println("服务器启动完毕");
        }catch (IOException e){
            e.printStackTrace();
        }
    }

    public void start() throws IOException{
        try {
            while (true) {
                System.out.println("等待客户端连接");
                Socket socket = serverSocket.accept();
                System.out.println("一个客户端连接上了");
                InputStream in = socket.getInputStream();
                InputStreamReader isr = new InputStreamReader(in, StandardCharsets.UTF_8);
                BufferedReader br = new BufferedReader(isr);
                //读取一行来自远端计算机(客户端)发过来的字符串
                /*
                当我们通过br.readLine()读取来自远端计算机(客户端)发送过来的字符串时，
                远端计算机只有調用socket.close()正常与我们断开连接时，readLine()才会返回hull.
                */
                String message;
                while((message=br.readLine())!=null) {
                    System.out.println("客户端说:" + message);
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    public static  void main(String[] args) throws IOException {
        Server server = new Server();
        server.start();
    }
}
